TY - RPRT TI - A Technology Pathway for Airbreathing, Combined-Cycle, Horizontal Space Launch Through SR-71 Based Trajectory Modeling AU - Kloesel, Kurt J. AU - Ratnayake, Nalin A. AU - Clark, Casie M. PY - 2011 UR - https://ntrs.nasa.gov/citations/20110013567 ID - 20110013567 ER -